package com.huizu.framework.config;

import com.huizu.common.config.CasProperties;
import com.huizu.framework.config.properties.PermitAllUrlProperties;
import com.huizu.framework.security.filter.JwtAuthenticationTokenFilter;
import com.huizu.framework.security.handle.AuthenticationEntryPointImpl;
import com.huizu.framework.security.handle.LogoutSuccessHandlerImpl;
import com.huizu.framework.web.service.CasAuthenticationRedirect;
import org.jasig.cas.client.session.SingleSignOutFilter;
import org.jasig.cas.client.validation.Cas20ServiceTicketValidator;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.boot.autoconfigure.condition.ConditionalOnExpression;
import org.springframework.boot.autoconfigure.condition.ConditionalOnProperty;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Conditional;
import org.springframework.http.HttpMethod;
import org.springframework.security.authentication.AuthenticationManager;
import org.springframework.security.cas.ServiceProperties;
import org.springframework.security.cas.authentication.CasAuthenticationProvider;
import org.springframework.security.cas.web.CasAuthenticationEntryPoint;
import org.springframework.security.cas.web.CasAuthenticationFilter;
import org.springframework.security.config.annotation.authentication.builders.AuthenticationManagerBuilder;
import org.springframework.security.config.annotation.method.configuration.EnableGlobalMethodSecurity;
import org.springframework.security.config.annotation.web.builders.HttpSecurity;
import org.springframework.security.config.annotation.web.configuration.WebSecurityConfigurerAdapter;
import org.springframework.security.config.annotation.web.configurers.ExpressionUrlAuthorizationConfigurer;
import org.springframework.security.config.http.SessionCreationPolicy;
import org.springframework.security.core.userdetails.AuthenticationUserDetailsService;
import org.springframework.security.core.userdetails.UserDetailsService;
import org.springframework.security.crypto.bcrypt.BCryptPasswordEncoder;
import org.springframework.security.web.authentication.logout.LogoutFilter;
import org.springframework.security.web.authentication.logout.SecurityContextLogoutHandler;
import org.springframework.web.filter.CorsFilter;

/**
 * spring security配置
 *
 * @author ruoyi
 */
@EnableGlobalMethodSecurity(prePostEnabled = true, securedEnabled = true)
public class SecurityConfig extends WebSecurityConfigurerAdapter {

    @Autowired
    private CasProperties casProperties;

    @Autowired
    private AuthenticationUserDetailsService casUserDetailService;

    /**
     * 自定义用户认证逻辑
     */
    @Autowired
    private UserDetailsService userDetailsService;

    /**
     * 认证失败处理类
     */
    @Autowired
    private AuthenticationEntryPointImpl unauthorizedHandler;

    /**
     * 退出处理类
     */
    @Autowired
    private LogoutSuccessHandlerImpl logoutSuccessHandler;

    /**
     * token认证过滤器
     */
    @Autowired
    private JwtAuthenticationTokenFilter authenticationTokenFilter;

    /**
     * 跨域过滤器
     */
    @Autowired
    private CorsFilter corsFilter;

    /**
     * 允许匿名访问的地址
     */
    @Autowired
    private PermitAllUrlProperties permitAllUrl;

    /**
     * 设置AuthenticationProvider
     */
    @Autowired
    public void configureGlobal(AuthenticationManagerBuilder auth) throws Exception {
        auth.authenticationProvider(casAuthenticationProvider());
    }



    /**
     * anyRequest          |   匹配所有请求路径
     * access              |   SpringEl表达式结果为true时可以访问
     * anonymous           |   匿名可以访问
     * denyAll             |   用户不能访问
     * fullyAuthenticated  |   用户完全认证可以访问（非remember-me下自动登录）
     * hasAnyAuthority     |   如果有参数，参数表示权限，则其中任何一个权限可以访问
     * hasAnyRole          |   如果有参数，参数表示角色，则其中任何一个角色可以访问
     * hasAuthority        |   如果有参数，参数表示权限，则其权限可以访问
     * hasIpAddress        |   如果有参数，参数表示IP地址，如果用户IP和参数匹配，则可以访问
     * hasRole             |   如果有参数，参数表示角色，则其角色可以访问
     * permitAll           |   用户可以任意访问
     * rememberMe          |   允许通过remember-me登录的用户访问
     * authenticated       |   用户登录后可访问
     */
    @Override
    protected void configure(HttpSecurity httpSecurity) throws Exception {
        // 注解标记允许匿名访问的url
        ExpressionUrlAuthorizationConfigurer<HttpSecurity>.ExpressionInterceptUrlRegistry registry = httpSecurity.authorizeRequests().antMatchers(HttpMethod.OPTIONS, "/**").permitAll();
        permitAllUrl.getUrls().forEach(url -> registry.antMatchers(url).permitAll());

        httpSecurity
                // CSRF禁用，因为不使用session
                .csrf().disable()
                // 禁用HTTP响应标头
                .headers().cacheControl().disable().and()
                // 认证失败处理类
                .exceptionHandling().authenticationEntryPoint(unauthorizedHandler).and()
                // 基于token，所以不需要session
                .sessionManagement().sessionCreationPolicy(SessionCreationPolicy.STATELESS).and()
                // 过滤请求
                .authorizeRequests()
                // 对于登录login 注册register 验证码captchaImage 允许匿名访问
                .antMatchers("/login", "/register", "/captchaImage","/proconfigrich/getByName",
                        "/project/proconfigimage/listImage",
                        "/project/prozczx/listNoAccess",
                        "/project/config/listNoAccess",
                        "/large/screen/getTopData",
                        "/large/screen/getLeftData",
                        "/large/screen/getRightData",
                        "/large/screen/getBottomData",
                        "/large/screen/getLeftMoreData",
                        "/large/screen/getLeftDataCopy",
                        "/large/screen/getLeftMoreDataCopy").permitAll()
                // 静态资源，可匿名访问
                .antMatchers(HttpMethod.GET, "/", "/*.html", "/**/*.html", "/**/*.css", "/**/*.js", "/profile/**").permitAll()
                .antMatchers("/swagger-ui.html", "/swagger-resources/**", "/webjars/**", "/*/api-docs", "/druid/**").permitAll()
                .antMatchers("/**/dev-api/**").anonymous()
                // 接口请求地址为/anonymity
                .antMatchers("/**/anonymity/**").anonymous()
                // 除上面外的所有请求全部需要鉴权认证
                .anyRequest().authenticated()
                .and()
                .headers().frameOptions().disable();
        // 添加Logout filter
        httpSecurity.logout().permitAll().logoutSuccessHandler(logoutSuccessHandler);
        httpSecurity.addFilter(casAuthenticationFilter())
                .addFilterBefore(authenticationTokenFilter, CasAuthenticationFilter.class)
                .addFilterBefore(singleSignOutFilter(), CasAuthenticationFilter.class).exceptionHandling()
                .authenticationEntryPoint(casAuthenticationEntryPoint());

        // 添加CORS filter
        httpSecurity.addFilterBefore(corsFilter, JwtAuthenticationTokenFilter.class);
        httpSecurity.addFilterBefore(corsFilter, LogoutFilter.class);
        // disable page caching
        httpSecurity.headers().cacheControl();
    }

    /**
     * 强散列哈希加密实现
     */
    @Bean
    public BCryptPasswordEncoder bCryptPasswordEncoder() {
        return new BCryptPasswordEncoder();
    }
    /**
     * 解决 无法直接注入 AuthenticationManager
     *
     * @return
     * @throws Exception
     */
    @Bean
    @Override
    //@ConditionalOnExpression("${app.casEnable}")
    public AuthenticationManager authenticationManagerBean() throws Exception {
        return super.authenticationManagerBean();
    }

    /**
     * 身份认证接口
     */
    @Override
    protected void configure(AuthenticationManagerBuilder auth) throws Exception {
        auth.userDetailsService(userDetailsService).passwordEncoder(bCryptPasswordEncoder());
        if (casProperties.isCasEnable()) {
//            super.configure(auth);
            auth.authenticationProvider(casAuthenticationProvider());
        }
    }

    /**
     * cas认证入口
     */
    @Bean
    public CasAuthenticationEntryPoint casAuthenticationEntryPoint() {
        // 自定义入口类，进行自定义参数传参
        CasAuthenticationEntryPoint casAuthenticationEntryPoint = new CasAuthenticationRedirect();
        //设置cas 服务端登录url ${cas.server.host.url}/login
        casAuthenticationEntryPoint.setLoginUrl(casProperties.getCasServerLoginUrl());
        //设置cas 客户端信息
        casAuthenticationEntryPoint.setServiceProperties(serviceProperties());
        return casAuthenticationEntryPoint;
    }

    /**
     * cas客户端信息
     */
    @Bean
    public ServiceProperties serviceProperties() {
        ServiceProperties serviceProperties = new ServiceProperties();
        //设置cas客户端登录完整的url  ${cas.server.host.url}/testLogin/casLogin
        serviceProperties.setService(casProperties.getAppServerUrl() + casProperties.getAppLoginUrl());
        serviceProperties.setAuthenticateAllArtifacts(true);
        return serviceProperties;
    }



    /**
     * cas认证过滤器
     * casAuthenticationFilter.setFilterProcessesUrl 必须要设置完整路径 不然会无限重定向
     */
    @Bean
    public CasAuthenticationFilter casAuthenticationFilter() throws Exception {
        CasAuthenticationFilter casAuthenticationFilter = new CasAuthenticationFilter();
        casAuthenticationFilter.setAuthenticationManager(authenticationManager());
        casAuthenticationFilter.setFilterProcessesUrl(casProperties.getAppServerUrl() + casProperties.getAppLoginUrl());
        casAuthenticationFilter.setServiceProperties(serviceProperties());
        return casAuthenticationFilter;
    }

    /**
     * cas认证Provider
     */
    @Bean
    public CasAuthenticationProvider casAuthenticationProvider() {
        CasAuthenticationProvider casAuthenticationProvider = new CasAuthenticationProvider();
        //设置UserDetailService 登录成功后 会进入loadUserDetails方法中
        casAuthenticationProvider.setAuthenticationUserDetailsService(casUserDetailService);
        //设置cas 客户端信息
        casAuthenticationProvider.setServiceProperties(serviceProperties());
        //设置cas 票证验证器
        casAuthenticationProvider.setTicketValidator(cas20ServiceTicketValidator());
        casAuthenticationProvider.setKey("casAuthenticationProviderKey");
        return casAuthenticationProvider;
    }

    /**
     * cas 票证验证器
     */
    @Bean
    public Cas20ServiceTicketValidator cas20ServiceTicketValidator() {
        return new Cas20ServiceTicketValidator(casProperties.getCasServerUrl());
    }

    /**
     * 单点注销过滤器
     * 用于接收cas服务端的注销请求
     */
    @Bean
    public SingleSignOutFilter singleSignOutFilter() {
        SingleSignOutFilter singleSignOutFilter = new SingleSignOutFilter();
        //singleSignOutFilter.setCasServerUrlPrefix(casProperties.getCasServerUrl());
        singleSignOutFilter.setIgnoreInitConfiguration(true);
        return singleSignOutFilter;
    }

    /**
     * 单点退出过滤器
     * 用于跳转到cas服务端
     */
    @Bean
    public LogoutFilter logoutFilter() {
        LogoutFilter logoutFilter = new LogoutFilter(casProperties.getCasServerLogoutUrl(), new SecurityContextLogoutHandler());
        logoutFilter.setFilterProcessesUrl(casProperties.getAppLogoutUrl());
        return logoutFilter;
    }


}
